duo-design.dk

📜 Historical scan 2026-06-17 05:10:44 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

duo-design.dk is a .dk domain served by 2 nameservers (nia.ns.cloudflare.com, quinton.ns.cloudflare.com). It was registered on 6 February 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.64.226 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 198ms

Nameserver	IP addresses	PTR	ASN / ISP
nia.ns.cloudflare.com	—	—	—
quinton.ns.cloudflare.com	—	—	—

🌍 A Records#

2 records 268ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.64.226	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.156.42	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

7 records 226ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	aspmx.l.google.com	142.250.147.27	rd-in-f27.1e100.net	AS15169 Google LLC
20	—	alt1.aspmx.l.google.com	192.178.211.27	lcbomp-in-f27.1e100.net	AS15169 Google LLC
20	—	alt2.aspmx.l.google.com	172.253.158.27	so-in-f27.1e100.net	AS15169 Google LLC
30	—	aspmx2.googlemail.com	172.253.158.27	so-in-f27.1e100.net	AS15169 Google LLC
30	—	aspmx3.googlemail.com	108.177.125.26	tp-in-f26.1e100.net	AS15169 Google LLC
30	—	aspmx4.googlemail.com	192.178.230.27	yunrtab-in-f27.1e100.net	AS15169 Google LLC
30	—	aspmx5.googlemail.com	173.194.43.27	yudlsqd-in-f27.1e100.net	AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 247ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:40e2	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:9c2a	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 244ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.64.226,172.67.156.42 ech=AEX+DQBBJwAgACBdyL6ohvLUVHyP5QrQOPMNwhUaSEvijFQOPei6OLPPJwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:40e2,2606:4700:3035::ac43:9c2a

📝 TXT Records#

2 records 483ms

TXT Record
ca3-3ddc57c8d0c8474097c6d7b35658b1fb
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (duo-design.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.duo-design.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:info@duo-design.dk

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 08:28:35

www	NXDOMAIN
www vs bare domain	www does not resolve duo-design.dk: 104.21.64.226 172.67.156.42 2606:4700:3034::ac43:9c2a 2606:4700:3036::6815:40e2 (AS13335) www.duo-design.dk: no address (all like this)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

383ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

213ms

Field	Value
Serial	2406149028
Primary NS (MNAME)	nia.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 12:24:25

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2006-02-06
Expires	2027-02-28 (132d)

🔗 Same registrant#

1 domain

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
toettrup.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

198ms

268ms

226ms

AAAA

247ms

TXT

483ms

CAA

288ms

HTTPS

244ms

TLSA

344ms

SOA

213ms

MTA-STS

257ms

DNSSEC

383ms

SRV

0ms

Total

2752ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 04:59:18	1006ms	2 NS 2 A 7 MX	🔓 Insecure
2026-09-27 03:57:45	959ms	2 NS 2 A 7 MX	🔓 Insecure
2026-09-25 03:13:37	1125ms	2 NS 2 A 7 MX	🔓 Insecure
2026-09-15 07:22:59	1231ms	2 NS 2 A 7 MX	🔓 Insecure
2026-09-09 20:56:20	1208ms	2 NS 2 A 7 MX	🔓 Insecure
2026-09-05 08:36:13	840ms	2 NS 2 A 7 MX	🔓 Insecure
2026-08-04 00:01:29	10914ms	2 NS 2 A 7 MX	🔓 Insecure
2026-07-02 00:39:46	1132ms	2 NS 2 A 7 MX	🔓 Insecure
2026-06-17 05:15:30	28936ms	2 NS 2 A 7 MX	🔓 Insecure
2026-06-17 05:10:44 shown	2752ms	2 NS 2 A 7 MX	🔓 Insecure
2026-06-17 05:00:58	850ms	2 NS 2 A 7 MX	🔓 Insecure
2026-06-17 05:00:21	782ms	2 NS 2 A 7 MX	🔓 Insecure